package com.chinasoft.day01.ally;
import java.util.Scanner;
public class student {
    public static void main(String[] args) {
        Scanner sc=new Scanner(System.in);
        System.out.println("请输入n：");
        int n=sc.nextInt();
        System.out.println("结果："+fib(n));
    }
    public static int fib(int n){
        if(n==1||n==2){
            return 1;
        }
        else{
            return fib(n-1)+fib(n-2);
        }
    }

}
